Cows can sleep standing up, but they can only dream lying down.
745
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Iceland has been so culturally isolated through history since the Vikings, that compared to other Scandinavian counties, people who speak Icelandic can still read the old Norsk sagas.
4
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The average person in their lifetime will spend an estimated 20,160 minutes kissing!
212
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14